CN221753761U - A thin layer glue coating device for laminating machine - Google Patents

Abstract

The utility model discloses a thin-layer glue coating device for a laminating machine, comprising a glue box, a smooth glue scraping roller, a glue upper roller, a scraper and a film pressing assembly, wherein at least one arc surface of the glue upper roller is immersed in the glue box, the smooth glue scraping roller is arranged in parallel with one side of the glue upper roller and can be adjusted to be away from or close to the glue upper roller, the scraper is arranged on the side of the smooth glue scraping roller away from the glue upper roller, a plurality of grooves are engraved on the glue upper roller to discretely divide the outer circumferential surface of the glue upper roller into a plurality of evenly distributed glue coating small surfaces, and the grooves are used to reduce the adhesion of the outer circumferential surface of the glue upper roller to the substrate during glue coating.

Description

A thin layer glue coating device for laminating machine

Technical Field

The utility model relates to the technical field of laminating machines, in particular to a thin layer glue coating device for a laminating machine.

Background Art

Laminating machine is a device used to cover the surface of printed matter with a protective and decorative film. Before laminating, a layer of glue needs to be applied on the film as the base material, and then compounded to the surface of the printed matter after drying. Usually, in order to ensure the visual effect of the printed matter, the glue layer is generally required to be as thin as possible.

The existing laminating machines all use a combination of a chrome-plated smooth glue roller and a chrome-plated smooth scraping glue roller to apply glue to the substrate. The smooth glue roller brings glue from the glue box and transfers it to the substrate. The glue coating device of this structure adjusts the gap between the outer surfaces of the scraping glue roller and the upper glue roller by adjusting the distance between the scraping glue roller and the upper glue roller, thereby adjusting the thickness of the glue that can be brought to the substrate by the surface of the upper glue roller and further controlling the thickness of the glue coating layer. The glue that adheres to the scraping glue roller from the upper glue roller is scraped off by the scraper and flows back to the glue box. Since both the upper glue roller and the scraping glue roller are smooth rollers, this structural method has the following disadvantages: 1. The glue coating thickness cannot be less than 7g/m², because when the glue coating degree is adjusted to 7g/m² or below, the glue thickness on the outer cylindrical surface of the upper glue roller is too high. 1. If the film is too thin, it will have a strong adhesion to the film substrate, forming a bonding effect. In this way, when the substrate passes over the upper glue roller, it will be firmly adhered to the surface of the upper glue roller, resulting in a film rolling accident, that is, the substrate is rolled up on the upper glue roller. Once the film rolling phenomenon occurs, the smooth surface of the glue roller is damaged, resulting in production interruption. Therefore, under normal circumstances, the user cannot adjust the thickness of the glue coating to 7g/m² or below; 2. Due to the excessive thickness of the glue coating layer, the drying speed is low, the production speed is limited and cannot be increased, and the production efficiency is low; 3. The thick glue layer also causes a large amount of glue to be used, resulting in waste, resulting in high production costs for the user of the laminating machine, and also affecting the visual quality of the printed product; Based on the above reasons, the applicant has carried out relevant research and development.

Summary of the invention

The utility model aims to provide a thin layer glue coating device for a laminating machine, which solves the problems in the prior art.

To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a thin layer glue coating device for a laminating machine, comprising a glue box 4, a smooth glue scraping roller 1, a glue upper roller 2, a scraper 5 and a film pressing assembly 3, at least a section of the arc surface of the glue upper roller 2 is immersed in the glue box 4, the smooth glue scraping roller 1 is arranged in parallel to one side of the glue upper roller 2 and can be adjusted to be away from or close to the glue upper roller 2, the scraper 5 is arranged on the side of the smooth glue scraping roller 1 away from the glue upper roller 2, and the glue upper roller 2 is engraved with a plurality of grooves 201 to discretely divide the outer cylindrical surface of the glue upper roller 2 into a plurality of evenly distributed glue coating small surfaces 202, and the grooves 201 are used to reduce the adhesion of the outer cylindrical surface of the glue upper roller 2 to the substrate 6 during glue coating.

Furthermore, the number of lines of the groove 201 is 250, and the width of the groove 201 is adapted to the number of lines.

Furthermore: the depth of the groove 201 is 0.2-0.5 mm.

Furthermore, the glue-coated small surface 202 separated by the groove 201 is hexagonal.

Furthermore, the laminating assembly 3 includes at least two laminating rollers 301 disposed on both sides of the axis of the glue-applying roller 2 , and the laminating rollers 301 are used to press the substrate 6 toward the outer circumferential surface of the glue-applying roller 2 .

The beneficial effects of the utility model are as follows: the thin-layer glue coating device for the laminating machine provided by the utility model carves out evenly distributed 250-line hexagonal grid-shaped grooves on the outer circumferential surface of the glue roller, thereby discretely dividing the outer circumferential surface of the glue roller from a whole surface into a plurality of evenly distributed hexagonal glue coating small surfaces. In this way, on the one hand, the contact surface between the substrate and the surface of the glue roller becomes an intermittent contact surface per unit time, which effectively reduces the adhesion effect and makes it easy for the substrate to separate from the surface of the glue roller after glue coating; on the other hand, since glue is contained in the groove during glue coating, its thickness is thicker than the glue thickness on the glue coating small surface. Therefore, not only will no adhesion effect be formed in the groove area, but also the integrity of the glue layer on the substrate can be guaranteed. In this way, the thickness of the glue coating can be effectively reduced. After actual tests, the gluing device using the technical solution has grooves distributed in a hexagonal grid and can accommodate glue. When the thickness of the glue layer is adjusted to 5g/m² during the gluing operation, there will be no film rolling phenomenon, which effectively ensures the reliability of the gluing operation; in terms of production speed, when the thickness of the glue layer is adjusted to 5g/m², due to the thin thickness of the glue layer and the fast drying speed, the speed of the whole machine can be increased by 15-20m/min, which significantly improves the production efficiency; in terms of cost, when the glue layer is adjusted to 5g/m², compared with the thinnest limit thickness of 7g/m² that can be achieved by the traditional gluing device, the glue consumption is saved by 28.57%, which not only reduces the waste of glue, but also significantly reduces the production cost.

BRIEF DESCRIPTION OF THE DRAWINGS

Fig. 1 is a schematic diagram of the structure of the utility model;

FIG. 2 is a schematic diagram of the local structure of the smooth-surface rubber scraping roller and the rubber-applying roller of the utility model.

DETAILED DESCRIPTION

The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

Please refer to Figures 1 and 2, a thin layer glue coating device for a laminating machine includes a glue box 4, a smooth glue scraping roller 1, a glue roller 2, a scraper 5 and a film pressing assembly 3, at least one arc surface of the glue roller 2 is immersed in the glue box 4, the smooth glue scraping roller 1 is arranged parallel to one side of the glue roller 2 and can be adjusted to be away from or close to the glue roller 2, the scraper 5 is arranged on the side of the smooth glue scraping roller 1 away from the glue roller 2, and the glue roller 2 is engraved with a plurality of grooves 201 to discretely divide the outer circumferential surface of the glue roller 2 into a plurality of uniformly distributed grooves. The dry gluing surface 202 and the groove 201 are used to reduce the adhesion of the outer cylindrical surface of the gluing roller 2 to the substrate 6 during gluing; preferably, the number of lines of the groove 201 is 250, and the width of the groove 201 is adapted to the number of lines; the depth of the groove 201 is 0.2~0.5mm; wherein the gluing surface 202 separated by the groove 201 is a hexagon, with particular reference to FIG. 2, all the grooves 201 that separate the outer cylindrical surface of the gluing roller 2 to form the gluing surface 202 are sequentially connected into a grid shape.

According to the above structure provided in the present embodiment, by carving out grooves 201 uniformly distributed in a hexagonal grid shape with 250 lines on the outer circumferential surface of the glue roller 2, the outer circumferential surface of the glue roller 2 is discretely divided from a whole surface into a number of uniformly distributed hexagonal glue-coating small faces 202. In this way, on the one hand, the contact surface between the substrate 6 and the surface of the glue roller 2 becomes an intermittent contact surface per unit time, which effectively reduces the bonding effect and makes it easy for the substrate 6 to separate from the surface of the glue roller after gluing; on the other hand, since the groove 201 contains glue during gluing, its thickness is thicker than the glue thickness on the glue-coating small faces 202. Therefore, not only will no bonding effect be formed in the groove 201 area (i.e., the adhesion of the outer circumferential surface of the glue roller 2 to the substrate 6 is reduced), but also the integrity of the glue layer on the substrate 6 can be ensured. In this way, the thickness of the glue coating can be effectively reduced. After actual tests, the glue coating device using the present technical solution has the grooves 201 distributed in a hexagonal grid shape and can accommodate glue. When the thickness of the glue layer is adjusted to 5g/m² during the glue coating operation, there will still be no film rolling phenomenon, which effectively ensures the reliability of the glue coating operation. In terms of production speed, when the thickness of the glue layer is adjusted to 5g/m², due to the thin thickness of the glue layer and the fast drying speed, the speed of the whole machine can be increased by 15-20m/min, which significantly improves the production efficiency. In terms of cost, when the glue layer is adjusted to 5g/m², compared with the thinnest limit thickness of 7g/m² that can be achieved by the traditional glue coating device, the glue consumption is saved by 28.57%, which significantly reduces the production cost while reducing the waste of glue.

Further preferably, the laminating assembly 3 includes at least two laminating rollers 301 respectively arranged on both sides of the axis of the upper glue roller 2, and the laminating roller 301 is used to press the substrate 6 against the outer cylindrical surface of the upper glue roller 2, so as to ensure that the substrate 6 and the surface of the upper glue roller 2 have a contact with a set arc length, so as to ensure the uniformity of the glue layer after coating.

It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (5)

1. The utility model provides a laminating machine thin layer rubber coating device, includes rubber capsule (4), plain noodles frictioning roller (1), rubberizing roller (2), scraper (5) and press membrane subassembly (3), at least one section cambered surface on rubberizing roller (2) surface is immersed rubber capsule (4), plain noodles frictioning roller (1) are parallel to be located rubberizing roller (2) one side just can be for rubberizing roller (2) keep away from or be close to the regulation setting, scraper (5) are located plain noodles frictioning roller (1) are kept away from one side of rubberizing roller (2), its characterized in that: a plurality of grooves (201) are engraved on the rubberizing roller (2) to discretely divide the outer circular surface of the rubberizing roller (2) into a plurality of uniformly distributed rubberizing facets (202), and the grooves (201) are used for reducing the adhesion force of the outer circular surface of the rubberizing roller (2) to a base material (6) during rubberizing.

2. The thin-layer gumming device for a laminator according to claim 1, wherein: the number of lines of the grooves (201) is 250 lines, and the width of the grooves (201) is matched with the number of lines.

3. The thin-layer gumming device for a laminator according to claim 1, wherein: the depth of the groove (201) is 0.2-0.5 mm.

4. A thin-layer gumming device for a film laminating machine according to any one of claims 1 to 3, wherein: the rubberized facets (202) separated by the grooves (201) are hexagonal.

5. The thin-layer gumming device for a laminator according to claim 1, wherein: the film pressing assembly (3) at least comprises two film pressing rollers (301) which are respectively arranged on two sides of the axis of the rubberizing roller (2), and the film pressing rollers (301) are used for pressing the base material (6) to the outer circle surface of the rubberizing roller (2).